replace the blower motor switch
passenger foot well
The heater blower motor is on the interior passenger side. It is kind of a round shaped housing facing the floor.
30 amp fuse in fuse box.
On the inside of the firewall, below and behind the glove box.
Right side under the dash.
double check that it's the motor most times it's the resister for the fan speed In the firewall on the passenger side of the truck is the blower motor speed resister coils, they burn out alot. I could not find one for my Dakota so I got one from a dodge caravan and I changed the wirring, that is the most likely problem
The blower motor resistor pack is defective. Replace it.
Not always, but 99% of the time this is a sign that the Blower Motor Resistor Pack is defective. Replace it.
Under the dash, far passenger side.
It's located behind the glovebox, on the passanger side of the dash
check coolant level